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Finding the Fourth Proportional to 14,419.92, 19,893.95 and 8,449.41

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Solution

The fourth proportional to 14,419.92, 19,893.95 and 8,449.41 is: 11,656.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.92 : 19,893.95 = 8,449.41 : x
  2. Step 2: Convert to fraction form
    14,419.92/19,893.95 = 8,449.41/x
  3. Step 3: Cross multiply
    14,419.92x = 19,893.95 × 8,449.41
  4. Step 4: Simplify right side
    14,419.92x = 168,092,251.64
  5. Step 5: Solve for x
    x = 168,092,251.64/14,419.92
  6. Step 6: Final answer
    x = 11,656.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.